1 /* vi: set sw=4 ts=4: */
3 * sleep implementation for busybox
5 * Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
7 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
10 /* BB_AUDIT SUSv3 compliant */
11 /* BB_AUDIT GNU issues -- fancy version matches except args must be ints. */
12 /* http://www.opengroup.org/onlinepubs/007904975/utilities/sleep.html */
14 /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
16 * Rewritten to do proper arg and error checking.
17 * Also, added a 'fancy' configuration to accept multiple args with
18 * time suffixes for seconds, minutes, hours, and days.
23 /* This is a NOFORK applet. Be very careful! */
26 #if ENABLE_FEATURE_FANCY_SLEEP || ENABLE_FEATURE_FLOAT_SLEEP
27 static const struct suffix_mult sfx[] = {
36 int sleep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
37 int sleep_main(int argc UNUSED_PARAM, char **argv)
39 #if ENABLE_FEATURE_FLOAT_SLEEP
50 #if ENABLE_FEATURE_FLOAT_SLEEP
55 if (strchr(arg, '.')) {
58 int len = strspn(arg, "0123456789.");
69 duration += d * xatoul_sfx(&arg[len], sfx);
72 duration += xatoul_sfx(arg, sfx);
75 ts.tv_sec = MAXINT(typeof(ts.tv_sec));
77 if (duration >= 0 && duration < ts.tv_sec) {
79 ts.tv_nsec = (duration - ts.tv_sec) * 1000000000;
84 } while (errno == EINTR);
86 #elif ENABLE_FEATURE_FANCY_SLEEP
90 duration += xatou_range_sfx(*argv, 0, UINT_MAX - duration, sfx);
96 duration = xatou(*argv);
98 // Off. If it's really needed, provide example why
99 //if (sleep(duration)) {
100 // bb_perror_nomsg_and_die();